Chapter III: TECHNOLOGY.--Filter for Industrial Works.--Showing how to

make and use the filter.--With engraving 6443

The Val St. Lambert Glass Works.--With full description and
two illustrations 6444

Proper shoeing.--Horses' feet should be treated in
accordance with the work expected of them 6444

Ideas.--Relating to Milling. By A Looker-on 6445

Photographs for Studying the Movements of Men and Animals.
By M. MAREY.--How to avoid confusion in photographing rapid
movements.--With diagram 6445

Detective Photography.--As applied to criminal cases 6445

Strength of Yellow Pine 6449